Governor



No. 614,388. Patentedl Nov. l5, |898. V. E. HUNTER.

GOVERNOR.

(Application med Dec. 21, 18m.)

(No Mom.)

witness@ A er;

ma cams PETERS co. Pno'mumo., wAsHmcroN. n. c.

NTTED STATES PATENT 4Erica.

VICTOR E. HUNTER, OF CLEBURNE, TEXAS.

GOVERNOR.

SPECIFICATION forming part of Letters Patent No. 614,388, dated November15, 1898.

Application filed December 21, 1897- Serial No. 662,783. (No model.)

To all whom, it may concern:

Be it known that I, VICTOR E. HUNTER, residing at Cleburne, in thecounty of Johnson and State of Texas, have invented certain new anduseful Improvements in Governors; and I do hereby declare the followingto be a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it appertains to make anduse the same.

My present invention relates to a novel governor for steam or otherengines.

Inasmuch as it is not deemed necessary to illustrate and describe asteam-en gine in connection with the illustration of the governorproper, it may be well to premise that this governor belongs to thegeneral class of devices known as automatic cut-off mechanism,

ism, the purpose of the device bein g to change` the relation of thecontrolling-valve eccentric andthe crank upon the main shaft through themedium of centrifugal force acting through the elements of the governor.This change of relation regulates the lead of the controllin g-valve andthe supply of steam to the cylinder in accordance with the work to beperformed by the engineand in this manner not only regulates the speedof the engine, but by an equalization of the steam-supply serves toeconomize the expenditure of the steam or other motive fluid.

The object of my invention is to provide a governor of simple, durable,and efficient construction which will effect the cut-off with precisionand will be capable of ready adjustment to present the requisiteresistance to the operating force.

' To these and other ends the invention consists in mounting a pair ofvibrating segments of substantially semicircular form upon a pair ofdiametrically-extending arms iixedly carried by a hub mounted upon themain or engine shaft and supporting an eccentric in operative relationwith the eccentric of the controlling-valve, the whole being soconstructed and arranged that the governor members or segments will bevibrated under centrifugal force in order to regulate its movement andposition with respect to the crank, and thereby constantly regulate andvary the lead of the controlling-valve to effect the cut-off in a mannerto economize the expenditure of steam as the load of the engine isincreased or diminished.

Referring to the drawings, Figure lis a side elevation of my governorcomplete, the valverod being broken away. Fig. 2 is a similar viewshowing the governor members urged outwardly by the centrifugal force,and Fig. 3 is a view taken at right angles to Fig. l.

Referring to the numerals on the drawings, 1 indicates the engine-shaft, mounted in suitable bearings (not illustrated) and providedwith the usual crank 2, connected to the pitman extending from thecross-head of the engine. (Not illustrated.) 4

3 indicates the hub of my governor, keyed or otherwise secured upon theengine-shaft and somewhat elongated, as shown.

4 and 5 indicate a pair of diametrically-extending arms carried by thehub and upon the extremities of which are pivoted, as by means ofbearing-ears 7 and pintles 8, a pair of vib rating governor members orsegments 9 of substantially semicircular form and forming when in theirnormal or inactive positions a circular rim. These segments, as shown,are mounted at their opposite ends upon the hub through the intermediatearms, and the free ends of each member, contiguous to the supported endsof the opposite members, are designed to be urged outwardly bycentrifugal force as the engine-shaft and the governor fixed thereto arerotated at a high rate of speed. In order, therefore, to utilize thismovement of the free ends of the arms for the purpose of effecting thelead of the controlling-valve, the valve-eccentric 10 is mounted uponthe extended end of the hub, and the eccentric-strap 1l, connected tothe valve-rod 12, is clamped upon the eccentric in a manner wellunderstood in the art. Governor-links 13 are pivotally connected at oneend of each of the governor members and are likewise pivotally connectedat their opposite ends to the side of the eccentric l0 at diametricallyopposite points, as by pins l5 and I6.

A device organized in this manner will constitute an operative whole,since the movement of the governor members will shift the eccentric byreason of the link connection; but in order that the resistance of theIOO members will be sufficient to enable the engine to attain the properspeed without affecting the governor it is necessary that tensionmechanism be provided for opposing the movement of the governor and theconsequent shifting of the eccentric until a predetermined speed limithas been exceeded. I therefore employ tension mechanism consisting,essentially, of spring-sockets 17, pivoted upon the extremities of thepins 15 and 16 and adjustably carrying tension-rods 1S, connected to theinner extremities of tension-springs 19, secured at their opposite endsto eyelets 20, adjustably carried by the governor members and designedto augment the adjustment of the spring when the movement of thetensionrod is insuiicient. It will nowr be seen that as the governor isrotated beyond the speed limit, determined by the adjustment of thetension mechanism, the centrifugal force will overcome the resistance ofsuch mechanism and will urge the governor members outwardly, shiftingthc eccentric through the m edium of the governor-links and adj Listingthe relation of the controlling-valve with respect to the position ofthe crank, or, more properly speaking, with respect to the position ofthe piston within the engine-cylinder. Additional bearing-lugs 21 and 22may be provided in front of each of the bearing-lugs 14 and 7 in orderto permit the reversal of the governor, or the various elements of thedevice may be modified and varied Without departing from the scope ofthe invention.

1. In agovernor of the character described, the combination with a huband diametrically-extending arms, of segmental governor membersterminally supported upon the arms, an eccentric mounted upon the hub,governor-links pivotally connected at their opposite extremities to theeccentric and adjacent to the free ends of the governor members, andsprings connecting the governor members and eccentric, substantially asspecified.

2. In a governor of the character described, the combination with a huband diametri@- ally-extending arms, of segmental governor membersterminally pivoted at the opposite extremities of said arms, aneccentric mounted upon the hub, governor-links pivoted adjacent to thefree ends of the members and to the eccentric at diametrically oppositepoints, and longitudinally and laterally adjustable tension-springsconnecting the eccentric and governor, substantially as specitied.

3. The combination with an eccentric, of a pair of pivoted segmentalgovernor members operatively connected thereto, tensionsprings connectedto the eccentric and to the governor members, means for adjusting thetension of the springs, and means for shifting the springs laterally,substantially as specified.

4c. The combination with an eccentric and a pair of pivoted governormembers operatively connected thereto, of spring-sockets pivotailyconnected to the eccentric, tensionrods adj ustably carried by thesockets,sprin gs secured to the tension-rods, and adjustable eyeletscarried by the members and supporting the outer ends of the'springs,substantially as speciiied.

In testimony whereof I have signed this specification in the presence oftwo subscribing Witnesses.

VICTOR E. HUNTER.

Witnesses:

R. E. STALCUP, R. G. HALL.

